Re: [PATCH v1 0/4] iommu/arm-smmu-v3: Allocate vmid per vsmmu instead of s2_parent

[Jason Gunthorpe]

On Wed, Mar 05, 2025 at 10:51:38AM -0800, Nicolin Chen wrote:

> > I mean a normal S2 domain attaching to multiple devices on multiple
> > instances.
> 
> Oh, I haven't thought about a !nest_parent S2 case.
> 
> A nest_parent case will not allow devices to attach the S2 but
> always to a proxy nested S1 as we discussed previously. So, I
> think the implementation could be very different?

It could, and that is what you show here

But also, it could be the same implementation.

Jason